smc-3086-20-Whole $ calculations

Number and Algebra, NAP-J2-37

A new hammock costs $155.

Clive has $79.

Which two number sentences can be solved to find the amount of money Clive still needs to buy the hammock?

Shade two bubbles.

`$155 - $79 =`

`- $79= $155`

`$155 + $79=`

`$79 +`

`= $155`

Show Answers Only

`$155 – $79 =`

`$79 +`

`= $155`

Show Worked Solution

`$155 – $79 =`

`$79 +`

`= $155`

Number and Algebra, NAP-J2-24

Jim earned $14 each time he mowed a lawn in his neighbourhood.

Jim mowed 3 different lawns 2 times each.

How much money did Jim earn?

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`$84`

Show Worked Solution

`text(Total amount Jim earned)`

`= 3 xx 2 xx 14`

`= $84`

Number and Algebra, NAP-B2-40 SA

Peter sets up a fruit stall outside his house and sells oranges, pears and plums.

The table below shows the price of each fruit.

Peter sold 12 pieces of fruit and was paid $28.

Peter received $8 for all the pears he sold.

How many plums did Peter sell?

Show Answers Only

`6\ text(plums)`

Show Worked Solution

`text(Pears sold)`	`=$8 -: 2`
	`=4`

`=>\ text(The other 8 pieces were sold for $20)`

`text(Testing some guesses for the other 8 pieces:)`

`text(If 5 plums and 3 oranges,)`

`text(C)text(ost) = (5 xx3) + (3 xx 1) = $18\ \ text{(too low)}`

`text(If 6 plums and 2 oranges,)`

`text(C)text(ost) = (6 xx3) + (2 xx 1) = $20\ \ text{(correct)}`

`=>\ text(Peter sold a total of 6 plums.)`

Number and Algebra, NAP-B2-20

A group of soccer fans all go to a soccer game.

Entry to the game costs $3.

Altogether the group pay $156.

How many soccer fans are there in the group?

`50`	`51`	`52`	`63`

Show Answers Only

`52`

Show Worked Solution

`text(Fans in group)`	`=156 -: 3`
	`=52`

Number and Algebra, NAP-F2-32

A supermarket sells yoghurt in packs.

One pack of yoghurt has 8 tubs.

Each pack cost $6.

What is the highest number of tubs that can be bought for $40?

`42`	`48`	`52`	`56`	`64`

Show Answers Only

`48`

Show Worked Solution

`text(Number of packs)`	`= 40 ÷ 6`
	`= 6\ \ text(remainder)\ 4`

`=> 6\ text(packs can be bought)`

`:.\ text(Total tubs of yoghurt)`	`= 6 xx 8`
	`= 48`

Number and Algebra, NAP-F2-26 SA

Ivan and Novik receive pocket money each week.

Ivan gets $3 and Novik gets $7.

After 12 weeks, how much more pocket money has Novik received than Ivan?

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`$48`

Show Worked Solution

`text(Novik receives $4 more each week.)`

`:.\ text(Extra money after 12 weeks)`

`= 12 xx 4`

`= $48`

Number and Algebra, NAP-G2-13

Munro has $86.

How much more money does he need to buy the tennis racquet?

`$42`	`$48`	`$52`	`$58`

Show Answers Only

`$48`

Show Worked Solution

`text(Extra money needed for racquet)`

`=134-86`

`=$48`

Number and Algebra, NAP-I2-36 SA

A group of 8 friends are planning a trip to Reptile World.

Lunch will cost $9 per person.

Entry will cost $16 per person.

Hiring a bus for transport will cost $250 for the whole group.

What is the expected total cost of the trip for the whole group?

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`$450`

Show Worked Solution

`text(Lunch cost)`	`= 8 xx 9`
	`= $72`

`text(Entry cost)`	`= 8 xx 16`
	`= $128`
`text(Bus hire)`	` = $250`

`:.\ text(Total cost)`	`= 72 +128 + 250`
	`= $450`

Number and Algebra, NAP-D2-31 SA

A ticket to Sea World for two adults costs $36 in total.

A ticket to Sea World for one child is two thirds the cost of an adult ticket.

What is the cost of a ticket for one child?

Show Answers Only

`$12`

Show Worked Solution

`text(C)text(ost of 1 adult ticket)`

`= 36 -: 2`

`= $18`

`:.\ text(C)text(ost of 1 child ticket)`

`= 2/3 xx 18`

`= $12`

Number and Algebra, NAP-D2-20

A service station sells bottles of water for $2 each.

It also has a special of 3 bottles for $5.

What is the lowest cost of 8 bottles of water?

`$10.00`	`$12.00`	`$14.00`	`$16.00`

Show Answers Only

`$14.00`

Show Worked Solution

`text(Lowest cost of 8 bottles)`

`= (2 xx $5) + (2 xx $2)`

`= $14`

Number and Algebra, NAP-D2-14 SA

Mitchell is buying cricket balls from the sporting goods shop.

It costs $12 to buy 3 balls.

If each ball costs the same, how many balls could he buy for $48?

Show Answers Only

`12`

Show Worked Solution

`text(C)text(ost of 1 ball)`	`= 12 -: 3`
	`=$4`

`:.\ text(Number of balls he can buy)`

`=48-:4`

`=12`